Process of manufacturing bag or packing paper.



G. LOEBBECKB.

rnoonss or MANUIAUTUBING BAG on PACKING PAPER.

v AIPLIOATIDH II LED MAY 21, 1907.

Patented Aug. 18, 191i T I "LU ilillltf lihrltllll Willi G-EOBG LOEBBECKE. 63F ZIEHIrENDOIME'. NEAR BERLIN, GERMANY.

PROCESS OF MANUFACTURING HAG 03B; E'ACKING TEAIIEF To all whom it may concern:

Be it known that I, GEURG Lonnnrcnmf managing director, a subject of the King of Prussia, and resident of Zchiendorf, near Berlin, Kingdom of Prussia, German Empire, have invented at new and useful Process of Manufacturing Bug or lioching Paper, of which the following is o specification.

The present invention relates to a process for the manufacture of crnped' or gotfcred paper to be used for packing purposes, i. paper bags. The novelty is especially seen in the fact that the crcped or goilered paper, hereinafter to be called the fashioned paper, is firm in its creases and little copuble of yielding and therefore adopted, due to its special character and qualities, for the manufacture of paper bags which are to he used for carrying cement, grains or the like up to 50 kilograms without being liable to tear when being under the strain of such Weights and being carried about. T his great advantage, 2'. e. the high tensile strength of the paper bags according to the invention, solely due to the use of paper which has undergone a craping or go'lfering process, whereby its surfo'ce is highly increased per surface u'nity and consequently the pressure per surface unity greatly decreased relatively.

\Vhen carrying out the invention, the dry moist or wet apcr, consisting of'n paper pulp tough or ground corresponrfliug to the character of the fibers, is crnped or go'llered during itsgformutiou in n peper machinc by means of, scrapers, goffering lTillQl'S or my suitable means and then submitted to the drying process. At the some time the emu age or gaffer-age imparted to the pane-r is maintained in such a manner that during the drying process the fashioned. paper is neither ch e to increase nor shrink lungitm dintlly, whereby the increased sui'tnce of the paper due to crnpi'ng or goft'ering the some is maintained.

In carrying out the drying fashioned, i. e. the craped or go ered paper may be temporarily submitted. to pressure, for instance to pressure roller in such a manner that the crumpled pleats or creases in the paper produced by cruping or Fotlering grocess, the

the some, are pressed together. 'Thus the over great extensibility or elasticity of the fashioned paper is reduced, whereas the ten sile strength and tenacity is increased by a felting process which thus tithes piece, At

the some time the pressing assists to completely dry the paper and smooth the some in such. it manner that it can be printed upon and the pliable lcutherdike character or quality of the same produced by cmping or gofi'ermg the paper 1s increased. A greater plinhility can even further be obtained by drying the fashioned wet or moist paper between endless sieves or the like running together with the some which press their surfuces into the paper and thus maintain the cropnge or gol'l'ered imported to the paper and at the some time produce it second more delicate goll'eruge of the some.

A machine tor carrying into effect the present invention is represented in the occompanyiug drawing, the separate figures of which are to he considered us connected one with another at the lines A-A of Figures 1 and 2, B--.'B of Figs. 2 and 25 and C--G of 3 and l. All figures show in combination 2 machine for the production of cruped or gotlered mpernccordiug to the.

present invention, including cliiupcr muchluc, a cmpnug or gotfering device, an endless felt for transporting the crnpcd or gotfered paper, it drying and pressing oppuriv his and c rolling up :mporutus for rolling up the cl'oped or goilerod and dried paper. The machine is slmu'n in side elevation.

Fig. 1 shows the 11min partoi a paper mm chine a of the. ordinary construction. The pnpcr-pulp coutninml in the iunlr. i) flows dowz'l to the metal sieve c running,over a series of metal rolls 1] in the usuzil merrier. The paper web lornmd is mssed over suchint lmpuz'utusrs c a mid ziltcru'nrt between tho rolls f of a nourhingg' up uurutus or; shown in l i". 3. 'll'w couched paper after 'arltl passed around a roll q oi :1 sec-- ond ('OHCJlHQ:'f1])[]l1i':lllll3. A. scraper h orronggod ueltr the u ppm surface of such roll g is used 'for crnping or golforing the p11 ier foriued which after such crnpiug or goiter- .ing operation causing the production of creases, is fed by meunshoi." an endless tell; 7"

to the drying cylinders '1', [if arruugcd in series one above another in such a nmnncr that one drying cylinllcr ,l: of the upper series is situated between two adjacent drying;- cyliudcrs of the lower series as shown in Figs. 3 and 41.

The speed of the endless felt causing the feeding of the paper to the drying cylinders is regulated in such a manner that the creases of the amped or goti'er'cd paper are ing rolls A prmcntod against e1; isiou and maintained suisstnn" durin. mo feeding of the, pop H'xx from the scrocr 1i end the roll g. iii-runs. the lower sin cc of each drying cylinder an iildiGSS icit and around the upper surface of each drying cj indcr 71: a m pus ed in such manner that the crapcd or gofi'ercd Web to be dried moved ulong between the lower surface of each lower drying cylinder 75 and its felt Z and QlillQQW'itlCl moved aiong between the up per surface of each drying cylinder 7; and its .itelt m. During this continued passage around the cyiind i1 and the crsped or gojti'ered ed occordin l The. otatinr' drying cylinted that during the or goili'crcd paper tvoarrrtus the cre that the the. Wet paper face of the latter due to camping 7 ing are moiiuziincd. lr'on' to press together the es of the paper dnrii'ig opera-lion, the upper surfaces of some or upper felts 121', are n concoct with pressing rolls '22- 51nd likenusc the hm'er suriuces oi. the lower fel s are contact with pressiese rolls or 0 supported iJQt'WL n the forked ends of the Weighted levers p and in sucu a a.niunner that they exert a suitable pressure against the surface of the felts m, to coinpress the creases tori ed by ing or got :ter (the pres re of such cg "soils may increase gradually and in rat'o. to their distenceiiroin the first dryingcy indcrs 2", iii. To obtain a supplemental goii crugc of the nearly :iully dried, craped or goiicred Wfilh the last two, ihree or four dryi 1. i: and I: may be provided Wit metal bands or sieves Z and rep in an endless 11;. such cyindersi These metal hon or sieves are pressed into 'Ll'iG paper Web being sti l in e moist state by the rolls 0 and i actingnow in; l'QSSLllEflVllGlfl by the j ."tul go a e of the paper produced is secured. om the last c jlinder or the lower w Ei'li croped or got ed sod pressed paper is passed between smother set 0 rolis r and .5:

and around :1 drying cylinder t by means of an endless metal band u. This su tiplementzu-y pressing and drying action against the crsped or goifered paper may be repeated by e cylinder 7. partially surrounded by an endless hand 10, so that :1 thoroughly craped or gofi'ered dried and pressed paper may leave the apparatus described. The creases of the resulting product are maintained by the pressure exerted to them several times and the paper prepared be rolled up separately on one of a series of rolls 2 which may be withdrawn if necessary separately from their supports and delivered to places where the product may be Worked further on. i

The pressure exerted to the cruped or got?- lered paper during dryil'ig renders the latter firm and reduces its elasticity,

hat I claim is 1. The process oi manufacturing bag; or packing paper, consisting in first cramping or goiti ering the papcr during its fornmtion on the paper machine While in at moist conditiorn re nining the creped or gofiered paper a ainst elongation between traveling surfaces and exposing the crapcd or gott'ercifl pziper, during the drying operation, to pressure for compressing the crapcs or gotlerings and producing an additional teling thereof,

The process of manufacturing bag or packing paper, consisting in first craping or goii'ering the paper during its formation on the paper machine While in a moist con dition and suhscquently While still in a moist condition, guiding and restraining the croped or g i'eredi mper against elongation between traveling surfaces, thereby maintaining the crupes or goiierings and exposing the croped or gotfered paper While um.

der restraint between the traveling surfaces to pressure for compressing the crapes or gc liierings and produclng an additional farting thereof. testimony, that 1' claim. the foregoing as my invention, l have signed my name in presence of two Witnesses, this 7th dey of Miey 1907M e GEQRG LOEBBECEEE. lVitncsses:

l onn'mmn iii-i her, 1111?; HY Hi-isrnni 

